Home / 1,350.81-1,862.82-931.23

Finding the Fourth Proportional to 1,350.81, 1,862.82 and 931.23

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Solution

The fourth proportional to 1,350.81, 1,862.82 and 931.23 is: 1,284.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.81 : 1,862.82 = 931.23 : x
  2. Step 2: Convert to fraction form
    1,350.81/1,862.82 = 931.23/x
  3. Step 3: Cross multiply
    1,350.81x = 1,862.82 × 931.23
  4. Step 4: Simplify right side
    1,350.81x = 1,734,713.87
  5. Step 5: Solve for x
    x = 1,734,713.87/1,350.81
  6. Step 6: Final answer
    x = 1,284.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.